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INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
Dundigal, Hyderabad -500 043
ELECTRICAL AND ELECTRONICS ENGINEERING
COURSE DESCRIPTORCourse Title AC MACHINES LABORATORY
Course Code AEE106
Programme B.Tech
Semester IV EEE
Course Type Core
Regulation IARE - R16
Course Structure
Theory Practical
Lectures Tutorials Credits Laboratory Credits
3 1 4 3 2
Chief Coordinator Mr. K Devender Reddy, Assistant Professor Course Faculty Mr. K Devender Reddy, Assistant Professor
Mr. P Mabu Hussain, Assistant Professor
I. COURSE OVERVIEW:
The aim of this course is to conduct experiments on basic principles of AC machines and various direct and indirect tests conducts on transformers like open circuit and short circuit test, Sumpner’s test, heat run test. This course also deals with various direct and indirect tests conducts on three phase induction motor like brake test, no load and blocked rotor test, single phase induction motor and synchronous machine
II. COURSE PRE-REQUISITES:
Level Course Code Semester Prerequisites Credits
UG AHS006 I Engineering Physics 4
UG AEE004 III DC Machines and Transformers 4
III. MARKS DISTRIBUTION:
Subject SEE Examination CIA
Examination Total Marks
AC Machines Laboratory 70 Marks 30 Marks 100
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IV. DELIVERY / INSTRUCTIONAL METHODOLOGIES:
✘ Chalk & Talk ✘ Quiz ✘ Assignments ✘ MOOCs
✔ LCD / PPT ✘ Seminars ✘ Mini Project ✔ Videos
✔ Open Ended Experiments
V. EVALUATION METHODOLOGY:
Each laboratory will be evaluated for a total of 100 marks consisting of 30 marks for internal assessment and 70 marks for semester end lab examination. Out of 30 marks of internal assessment, continuous lab assessment will be done for 20 marks for the day to day performance and 10 marks for the final internal lab assessment.
Semester End Examination (SEE): The semester end lab examination for 70 marks shall be conducted by two examiners, one of them being Internal Examiner and the other being External Examiner, both nominated by the Principal from the panel of experts recommended by Chairman, BOS.
The emphasis on the experiments is broadly based on the following criteria:
20 % To test the preparedness for the experiment.
20 % To test the performance in the laboratory.
20 % To test the calculations and graphs related to the concern experiment.
20 % To test the results and the error analysis of the experiment.
20 % To test the subject knowledge through viva – voce.
Continuous Internal Assessment (CIA):
CIA is conducted for a total of 30 marks (Table 1), with 20 marks for continuous lab assessment during day to day performance, 10 marks for final internal lab assessment.
Table 1: Assessment pattern for CIA
Component Laboratory
Total Marks Type of Assessment Day to day performance Final internal lab
assessment
CIA Marks 20 10 30
Continuous Internal Examination (CIE):
One CIE exams shall be conducted at the end of the 16th week of the semester. The CIE exam is conducted for 10 marks of 3 hours duration.
Preparation Performance Calculations and Graph
Results and Error
Analysis Viva Total
2 2 2 2 2 10
VI. HOW PROGRAM OUTCOMES ARE ASSESSED:
Program Outcomes (POs) Strength Proficiency assessed by
PO 1 Engineering knowledge: Apply the knowledge of mathematics, science, engineering fundamentals, and an engineering specialization to the solution of complex engineering problems.
3 Calculations of the observations
PO 2 Problem analysis: Identify, formulate, review research literature, and analyze complex engineering problems
2 Characteristic curves
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Program Outcomes (POs) Strength Proficiency assessed by
reaching substantiated conclusions using first principles of mathematics, natural sciences, and engineering sciences.
PO 3 Design/development of solutions: Design solutions for complex engineering problems and design system components or processes that meet the specified needs with appropriate consideration for the public health and safety, and the cultural, societal, and environmental considerations.
2 Videos
PO 4 Conduct investigations of complex problems: Use research-based knowledge and research methods including design of experiments, analysis and interpretation of data, and synthesis of the information to provide valid conclusions.
2 Term observations
PO5 Modern tool usage: Create, select, and apply appropriate techniques, resources, and modern engineering and IT tools including prediction and modeling to complex engineering activities with an understanding of the limitations.
3 Conducting
experiments
3 = High; 2 = Medium; 1 = Low
VII. HOW PROGRAM SPECIFIC OUTCOMES ARE ASSESSED:
Program Specific Outcomes (PSOs) Strength Proficiency assessed by
PSO 1 Problem-Solving Skills: Exploit the knowledge of high voltage engineering in collaboration with power systems in innovative, dynamic and challenging environment, for the research based team work.
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PSO 2 Professional Skills: Identify the scientific theories, ideas, methodologies and the new cutting edge technologies in renewable energy engineering, and use this erudition in their professional development and gain sufficient competence to solve the current and future energy problems universally.
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PSO 3 Modern Tools in Electrical Engineering: Comprehend the technologies like PLC, PMC, process controllers, transducers and HMI one can analyze, design electrical and electronics principles to install, test, and maintain power system and industrial applications.
3 Term observations
3 = High; 2 = Medium; 1 = Low
VIII. COURSE OBJECTIVES (COs):
The course should enable the students to:
I Evaluate losses and determine the efficiency of single phase and three phase electrical machines II Determine the voltage regulation, efficiency and temperature rise in various transformers III Apply PLC and digital simulation software to gain practical knowledge.
IX. COURSE LEARNING OUTCOMES (CLOs):
CLO
Code CLO’s At the end of the course, the student will have
the ability to PO’s Mapped Strength of Mapping AEE106.01 CLO 1 Calculate the efficiency and regulation of single
phase transformer by conducting open circuit and short circuit test
PO1, PO4 3
AEE106.02 CLO 2 Calculate the efficiency of single phase transformer by conducting sumpner’s test
PO1, PO4 3
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CLO
Code CLO’s At the end of the course, the student will have
the ability to PO’s Mapped Strength of Mapping AEE106.03 CLO 3 Classify the different types of losses occurred in
transformers and separate the each loss from other loss by conducting a suitable test.
PO2, PO3 2
AEE106.04 CLO 4 Describe the operation of scott connection to convert three phase supply to two phase supply or vice versa.
PO1, PO2, PO3 3
AEE106.05 CLO 5 Examine the rise in temperature of a transformer by heat run test
PO2, PO4 2
AEE106.06 CLO 6 Determine the efficiency of single phase transformer by load test
PO1, PO2, PO3 3 AEE106.07 CLO 7 Draw the circle diagram to find the efficiency of
three phase induction motor by conducting no load and blocked rotor tests.
PO2, PO4 2
AEE106.08 CLO 8 Determine the efficiency and slip by brake test on three phase squirrel cage induction motor
PO1, PO2, PO3 3 AEE106.09 CLO 9 Estimate the regulation of an alternator by
different methods of testing.
PO1, PO3, PO4 3 AEE106.10 CLO 10 Determination of Xd and Xq in a three phase
salient pole synchronous motor
PO1, PO2 3
AEE106.11 CLO 11 Draw the ‘V’ and ‘inverted-V’ curves of synchronous motor
PO3, PO4 2
AEE106.12 CLO 12 Determine the equivalent parameters of single phase induction motor by suitable tests.
PO1, PO2 3
AEE106.13 CLO 13 Determine the efficiency of single phase transformer by digital simulation.
PO1, PO2, PO5 3 AEE106.14 CLO 14 Describe the operation of scott connection to
convert three phase supply to two phase supply or vice versa by digital simulation
PO1, PO2, PO5 3
3 = High; 2 = Medium; 1 = Low
X. MAPPING COURSE LEARNING OUTCOMES LEADING TO THE ACHIEVEMENT OF PROGRAM OUTCOMES AND PROGRAM SPECIFIC OUTCOMES:
CLOs
Program Outcomes (POs) Program Specific Outcomes (PSOs) PO1 PO2 PO3 PO4 PO5 PO6 PO7 PO8 PO9 PO10 PO11 PO12 PSO1 PSO2 PSO3
CLO 1 3 2
CLO 2 3 2
CLO 3 2 2
CLO 4 3 2 2
CLO 5 2 2
CLO 6 3 2 2
CLO 7 2 2
CLO 8 3 2 2
CLO 9 3 2 2
CLO 10 3 2
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Program Outcomes (POs) Program Specific Outcomes (PSOs) PO1 PO2 PO3 PO4 PO5 PO6 PO7 PO8 PO9 PO10 PO11 PO12 PSO1 PSO2 PSO3
CLO 11 2 2
CLO 12 3 2 3
CLO 13 3 2 3 3
CLO 14 3 2 3 3
3 = High; 2 = Medium; 1 = Low
XI. ASSESSMENT METHODOLOGIES – DIRECT CIE Exams PO1, PO2, PO3,
PO4, PO5 SEE Exams PO1, PO2, PO3,
PO4, PO5 Assignments - Seminars - Laboratory
Practices
PO1, PO2, PO3, PO4, PO5
Student Viva
PO1, PO2, PO3,
PO4, PO5 Mini Project - Certification -
XII. ASSESSMENT METHODOLOGIES - INDIRECT
✔ Early Semester Feedback ✔ End Semester OBE Feedback
✘ Assessment of Mini Projects by Experts
XIII. SYLLABUS
LIST OF EXERCISES
Week - 1 OC AND SC TEST ON SINGLE PHASE TRANSFORMER
Determine the equivalent circuit parameters; predetermine the efficiency and regulation by open circuit and short circuit test in a single phase transformer.
Week - 2 SUMPNER’S TEST
Predetermine the efficiency and regulation of two identical single phase transformers.
Week - 3 SCOTT CONNECTION OF TRANSFORMERS
Conversion of three phases to two phase using single phase transformers.
Week - 4 SEPARATION OF CORE LOSSES IN 1 - ɸ TRANSFORMER Find out the Eddy current and Hysteresis losses in single phase transformer Week - 5 HEAT RUN TEST ON 1- ɸ TRANSFORMER
Determine the temperature rise in a 1- ɸ transformer using back-back test.
Week - 6 LOAD TEST ON SINGLE PHASE TRANSFORMER
To determine the efficiency and regulation of single phase transformer by conducting load test.
Week - 7 BRAKE TEST ON 3- ɸ SQUIRREL CAGE INDUCTION MOTOR Plot the performance characteristics of three phase induction motor.
Week - 8 CIRCLE DIAGRAM OF 3 - ɸ SQUIRREL CAGE INDUCTION MOTOR
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Plot the circle diagram and predetermine the efficiency and losses of 3 - ɸ squirrel cage induction motor Week - 9 REGULATION OF ALTERNATOR
Determine the regulation of alternator using synchronous impedance method.
Week - 10 SLIP TEST ON 3- ɸ SALIENT POLE SYNCHRONOUS MOTOR Determination of Xd and Xq in a three phase salient pole synchronous motor.
Week - 11 ‘V’ AND ‘INVERTED –V’ CURVES OF SYNCHRONOUS MOTOR Plot ‘V’ and ‘inverted –V’ curves to study the effect of power factor in synchronous motor.
Week - 12 NO-LOAD AND BLOCKED ROTOR TEST ON 1 - ɸ INDUCTION MOTOR Determine the equivalent circuit parameters of a single phase induction motor.
Week - 13 DETERMINATION OF LOSSES IN 1- ɸ TRANSFORMER USING DIGITAL SIMULATION
Determine the efficiency and regulation by open circuit and short circuit test in a single phase transformer using digital simulation.
Week - 14 THREE PHASE TO TWO PHASE CONVERSION IN 1- ɸ TRANSFORMER USING DIGITAL SIMULATION
Scott connection of transformer using digital simulation.
Text books
1. P S Bimbra, “Electrical Machines”, Khanna Publishers, 2nd Edition, 2008.
2. Kothari, “Electrical Machines”, TMH publication, 3rd Edition, 2010.
3. B. L Thereja, A.K Thereja Charles Kingsley JR., Stephen D U mans, “Electric Machinery”, McGraw-Hill, 6th Edition, 1985.
References
1. J B Gupta, “Theory and Performance of Electrical Machines”,S K Kataria & Sons Publication, 14th Edition, 2010
2. M G Say, “Alternating Current Machines”, Pitman Publishing Ltd, 4th Edition, 1976.
3. S K Bhattacharya, “Electrical Machines”, TMH publication, 2nd Edition, 2006.
XIV. COURSE PLAN:
The course plan is meant as a guideline. Probably there may be changes.
Week No Topics to be covered CLOs Reference
1 OC and SC test on single phase transformer CLO 1 R1:1.193 2 Sumpner’s test on pair of single phase transformers CLO 2 R1:1.19.
3 separation of core losses in 1 - ɸ transformer CLO 3 R1:1.19.6
4 Scott connection of transformers and CLO 4 R1:2.5
5 Heat run test on 1- ɸ transformer CLO5 R1:1.19.6
6 Load test on 1- ɸ transformer CLO 5 R1:1.19.6
7 Brake test on 3- ɸ squirrel cage induction motor CLO7 R1:7.31 8 No load and blocked rotor test of 3 - ɸ squirrel cage
induction motor
CLO6 R1:8.1
9 Regulation of alternator by synchronous impedance method
CLO8 R1:3.17
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Week No Topics to be covered CLOs Reference
10 Slip test on 3- ɸ salient pole synchronous motor CLO9 R1:6.7 11 V’ and ‘inverted –V’ curves of synchronous motor CLO 10 R1:6.13 12 No-load and blocked rotor test on 1 - ɸ induction motor CLO 11 R1:10.6 13 Determination of losses in 1- ɸ transformer using digital
simulation
CLO12 R1:1.193
14 Three phase to two phase conversion in 1- ɸ transformer using digital simulation
CLO13 R1:2.5
XV. GAPS IN THE SYLLABUS - TO MEET INDUSTRY / PROFESSION REQUIREMENTS:
S NO Description Proposed
actions
Relevance with POs
Relevance with PSOs 1 Dynamic braking of three phase
induction motor
NPTEL Videos
PO1, PO2, PO3 -
2 Load characteristics of induction generator
NPTEL Videos
PO1, PO2 -
Prepared by:
Mr. K Devender Reddy, Assistant professor
HOD, EEE
